Standard O₂ Tank

This article is about Standard O₂ Tank in Subnautica. For the related article on the Below Zero Wiki, see Standard_O₂_Tank.

This article is about the Standard O₂ Tank. If this is not what you are looking for, see Oxygen Tank (Disambiguation).

Carrying multiple oxygen tanks will increase your survivable exposure time in hostile environments.

― PDA, Dialogue

The Standard O₂ Tank is a crafted piece of Equipment which boosts the player's Oxygen supply by 30 units for a total of 75 units. It is crafted at the Fabricator.

The player must equip the Standard O₂ Tank in the tank slot of the Paperdoll UI in order to benefit from it. While not equipped, it takes up six slots (2×3) in the inventory.

It can be upgraded into the High Capacity O₂ Tank at the Fabricator, which can be further upgraded into the Lightweight High Capacity Tank or the Ultra High Capacity Tank at the Modification Station.

Equipping the O₂ Tank will incur small swimming speed penalty. For more information, see: Swimming Speed.

Note that when an O₂ tank of any kind is built, it defaults to being empty: it must be equipped in an atmosphere in order to fill it. This is important if the player intends to carry multiple tanks for deep diving without a vehicle.

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Items in Subnautica

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Acid Mushroom • Alien Feces • Baby Leviathan Enzymes • Blood Oil • Cave Sulfur • Copper Ore • Creepvine Sample • Creepvine Seed Cluster • Crystalline Sulfur • Coral Tube Sample • Deep Shroom • Diamond • Fungal Sample • Gas Pod • Gel Sack • Gold • Kyanite • Lithium • Metal Salvage • Magnetite • Nickel Ore• Quartz • Salt Deposit • Silver Ore • Speckled Rattler • Stalker Teeth • Ruby • Table Coral Sample • Titanium • Uraninite Crystal

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Blood Oil • Bulbo Tree Sample • Chinese Potato • Creepvine Sample • Creepvine Seed Cluster • Bulb Bush Sample • Lantern Fruit
Acid Mushroom Spore • Blue Palm Seed • Cave Bush Seed • Deep Shroom Spore • Eye Stalk Seed • Fern Palm Seed • Furled Papyrus Seed • Gabe's Feather Seed • Gel Sack Spores • Ghost Weed Seed • Grub Basket Seed • Jaffa Cup Seed • Jellyshroom Spore • Marblemelon Seeds • Membrain Tree Seed • Ming Plant Seed • Pink Cap Spore • Pygmy Fan Seed • Redwort Seed • Regress Shell Seed • Rouge Cradle Seed • Sea Crown Seed • Speckled Rattler Spore • Spiked Horn Grass Seed • Spotted Dockleaf Seed • Tiger Plant Seed

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Basic Materials	Bleach • Enameled Glass • Fiber Mesh • Glass • Lead • Lubricant • Plasteel Ingot • Silicone Rubber • Titanium • Titanium Ingot

Advanced Materials	Aerogel • Benzene • Hydrochloric Acid • Polyaniline • Synthetic Fibers • Hatching Enzymes

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Raw	Chinese Potato • Creepvine Sample • Bulb Bush Sample • Lantern Fruit • Marblemelon • Gel Sack

Processed	Nutrient Block • Snacks

Personal

Equipment	Compass • Fins • Fire Extinguisher • First Aid Kit • Pipe • Radiation Suit • Rebreather • Reinforced Dive Suit • Scanner Room HUD Chip • Standard O₂ Tank • High Capacity O₂ Tank • Stillsuit

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Beacon • Creature Decoy • Grav Trap • Mobile Vehicle Bay • Seaglide • Waterproof Locker

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Prawn Suit	Engine Efficiency Module • Prawn Suit Propulsion Cannon • Prawn Suit Torpedo Arm • Prawn Suit Grappling Arm • Prawn Suit Drill Arm • Prawn Suit Jump Jet Upgrade • Prawn Suit Thermal Reactor • Hull Reinforcement • Prawn Suit Depth Module MK1 • Prawn Suit Depth Module MK2 • Storage Module • Gas Torpedo • Vortex Torpedo

Seamoth	Engine Efficiency Module • Hull Reinforcement • Seamoth Depth Module MK1 • Seamoth Depth Module MK2 • Seamoth Depth Module MK3 • Storage Module • Seamoth Solar Charger • Seamoth Perimeter Defense System • Torpedo System • Seamoth Sonar • Gas Torpedo • Vortex Torpedo

Scanner Room	Scanner Room Range Upgrade • Scanner Room Speed Upgrade • Scanner Room HUD Chip

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